Cu2O-ZnO heterojunction solar cell coupled to a Ni(OH)(2)-rGO-PPy supercapacitor within a porous stoneware tile
CERAMICS INTERNATIONAL
Authors: Orozco-Messana, J.; Daly, R.; Zanchetta-Chittka, I. F.
Abstract
Coupling photovoltaic solar energy (PV) generation with its storage for full availability is a key challenge for sustainable PVs. Tile integration of both can turn buildings or other urban structures, onto autonomous power units for low consumption electronics, sensors, and different e-services, through film printed electronics, ubiquitously available for future smart cities, support the deployment of the internet of things, and closing the gap to net zero energy buildings. Starting from a porous stoneware tile, an electroless conductive Ni-Mo-P layer is the starting point for infiltrating on the connected porosity (3D free structure) of the tile thickness a nanostructured Ni(OH)(2)-rGO-PPy composite acting as supercapacitor. On the open conductive surface an optimized p-Cu2O/n-ZnO heterojunction was grown integrating a coupled charge-storage electrical circuit seamlessly on a commercial tile. The research presented on this paper has allowed the first experimental results of an autonomous, low-cost, energy supply system for future development of building integrated electronics.
Approaches for thermodynamically stabilized CsPbI3 solar cells
NANO ENERGY
Authors: Li, Zhizai; Zhou, Faguang; Wang, Qian; Ding, Liming; Jin, Zhiwen
Abstract
With its suitable bandgap (<1.73 eV), excellent optoelectronic properties and ideal thermo-stability, cesium lead halide, CsPbI3, is a promising candidate for next-generation photovoltaics (PVs). However, its instable structure (perovskite black phase can transform to non-perovskite yellow phase at room temperature) limits further development. Since the first report in 2014, much efforts have been made to stabilize the structure (black phase), and the corresponding inorganic perovskite solar cells (PSCs) have made great progress in terms of power conversion efficiency (PCE) which increased from 0.09% to 19.03%. In this review, we summarize the intrinsical instability of CsPbI3, and discuss the recent works in improving the stability of CsPbI3 from four aspects: (1) ionic incorporation; (2) metastable phases; (3) reduced dimensions; (4) steric hindrance. Finally, the problems that still exist and the possible directions for solving them are presented.